Mast ram books6/15/2023 Tighten shrouds and check that mast is vertical transverselyĪdjust mast ram to correct position for that rig Place mast heel in mast tube and locate mast between mast gate of boatĬheck that the jib leech line and forestay are not twisted To add a rig you should do the following in order: When sailing in waves expect to have the main 5 to 10 mm further out and use more camber in both sails. Gap Jib Boom to Mast 55 to 60 mm 50 mm 50 mm Gap Main Boom to c/l 10 to 12 mm 10 to 14 mm 20 to 25 mm Sailing Heel Angle 10 to 30 deg 20 to 30 deg 20 to 30 deg ![]() These are settings for IOM, but can be used as a guide for other classes. The following rig settings are a starting point for sail/rig trim, at middle of wind range for rig. You can note the mast rake on the sails themselves. ![]() The important thing is that you can reproduce rake settings that you have used successfully before. 3 mm aft movement from that point gives 1 degree of mast rake. The system we use is: scribe a line into the deck where the leading edge of the mast is aligned with it, when the mast is vertical. (This mainly applies to yachts that have a mast gate - the foredeck continuing past the mast)
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